Gabrielle Cassaro, Jennifer Bravo, Raj Mukeshbhai Patel and Marlin Halim*,
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Analysis of Dyed Textile Fibers: Connecting Small Molecule and Polymer Chemistry with Forensic Science
An upper division laboratory experiment focuses on the characterization of the chemical structures of fiber samples using a solubility test and FTIR (Fourier transform infrared) spectroscopy, and solvent extraction followed by TLC (thin layer chromatography) and UV–vis spectrometry for the detection of the dye component found in the fiber. Laboratory reports and embedded questions are used to assess the accomplishment of the learning outcomes. This activity provides students with additional opportunities (beyond those presented in introductory classes) to work with widely applicable techniques and simultaneously links polymer, organic, and general chemistry concepts with forensic applications. The protocol can also be easily adapted to address a variety of learning objectives.
期刊介绍：
The Journal of Chemical Education is the official journal of the Division of Chemical Education of the American Chemical Society, co-published with the American Chemical Society Publications Division. Launched in 1924, the Journal of Chemical Education is the world’s premier chemical education journal. The Journal publishes peer-reviewed articles and related information as a resource to those in the field of chemical education and to those institutions that serve them. JCE typically addresses chemical content, activities, laboratory experiments, instructional methods, and pedagogies. The Journal serves as a means of communication among people across the world who are interested in the teaching and learning of chemistry. This includes instructors of chemistry from middle school through graduate school, professional staff who support these teaching activities, as well as some scientists in commerce, industry, and government.
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